I have an app that I developed with XCode 3 and recently started editing with XCode 4. In the Target Summary I have the iOS Application Target form with fields: Identifier, Version, Build, Devices, and Deployment target. The Version field is blank and the Build field is 3.4.0 (which matches the version of the app from when I was still editing with XCode 3).
My questions are: What is the difference between the Version and Build fields? Why was the Version field blank after I upgraded to XCode 4? Thanks.